Severity: moderate Affected versions:
- Apache Portable Runtime Utility (APR-util) through 1.6.3 Description: A bug in APR-util version 1.6.3 (and earlier) allows a stack recursion attack against any library consumer which parses XML from untrusted sources and uses the apr_xml_quote_elem() function. Users are recommended to upgrade to version 1.6.4, which fixes this issue. Credit: Younghyo Cho @ CISLab, SeoulTech (finder) 4ra1n, pyn3rd and unam4 (finder) References: https://apr.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-32327 Timeline: 2026-03-07: Report received 2026-08-06: fixed in 1.6.x by r1936815
